go/src/cmd/compile/internal/dwarfgen/dwarf.go

func Info(fnsym *obj.LSym, infosym *obj.LSym, curfn obj.Func) (scopes []dwarf.Scope, inlcalls dwarf.InlCalls) { … }

func declPos(decl *ir.Name) src.XPos { … }

// createDwarfVars process fn, returning a list of DWARF variables and the
// Nodes they represent.
func createDwarfVars(fnsym *obj.LSym, complexOK bool, fn *ir.Func, apDecls []*ir.Name, closureVars map[*ir.Name]int64) ([]*ir.Name, []*dwarf.Var) { … }

// sortDeclsAndVars sorts the decl and dwarf var lists according to
// parameter declaration order, so as to insure that when a subprogram
// DIE is emitted, its parameter children appear in declaration order.
// Prior to the advent of the register ABI, sorting by frame offset
// would achieve this; with the register we now need to go back to the
// original function signature.
func sortDeclsAndVars(fn *ir.Func, decls []*ir.Name, vars []*dwarf.Var) { … }

type varsAndDecls …

func (v varsAndDecls) Len() int { … }

func (v varsAndDecls) Less(i, j int) bool { … }

func (v varsAndDecls) Swap(i, j int) { … }

// Given a function that was inlined at some point during the
// compilation, return a sorted list of nodes corresponding to the
// autos/locals in that function prior to inlining. If this is a
// function that is not local to the package being compiled, then the
// names of the variables may have been "versioned" to avoid conflicts
// with local vars; disregard this versioning when sorting.
func preInliningDcls(fnsym *obj.LSym) []*ir.Name { … }

// createSimpleVars creates a DWARF entry for every variable declared in the
// function, claiming that they are permanently on the stack.
func createSimpleVars(fnsym *obj.LSym, apDecls []*ir.Name, closureVars map[*ir.Name]int64) ([]*ir.Name, []*dwarf.Var, ir.NameSet) { … }

func createSimpleVar(fnsym *obj.LSym, n *ir.Name, closureVars map[*ir.Name]int64) *dwarf.Var { … }

// createABIVars creates DWARF variables for functions in which the
// register ABI is enabled but optimization is turned off. It uses a
// hybrid approach in which register-resident input params are
// captured with location lists, and all other vars use the "simple"
// strategy.
func createABIVars(fnsym *obj.LSym, fn *ir.Func, apDecls []*ir.Name, closureVars map[*ir.Name]int64) ([]*ir.Name, []*dwarf.Var, ir.NameSet) { … }

// createComplexVars creates recomposed DWARF vars with location lists,
// suitable for describing optimized code.
func createComplexVars(fnsym *obj.LSym, fn *ir.Func, closureVars map[*ir.Name]int64) ([]*ir.Name, []*dwarf.Var, ir.NameSet) { … }

// createComplexVar builds a single DWARF variable entry and location list.
func createComplexVar(fnsym *obj.LSym, fn *ir.Func, varID ssa.VarID, closureVars map[*ir.Name]int64) *dwarf.Var { … }

// RecordFlags records the specified command-line flags to be placed
// in the DWARF info.
func RecordFlags(flags ...string) { … }

// RecordPackageName records the name of the package being
// compiled, so that the linker can save it in the compile unit's DIE.
func RecordPackageName() { … }

func closureOffset(n *ir.Name, closureVars map[*ir.Name]int64) int64 { … }